Sickle holding and sharpening machine



Jan. 30, 1940. H. T. wADDlLL sIcKLE HOLDING AND SHARPENING MACHINE Filed sept. 3, 195e sheets-sheet 1 Jan. 30, 1940. H. T. wADDlLL v2,188,616

SICKLE HOLDING AND SHARPENING MACHINE 4 Filed Septf 3, 19.38r y, lSheets-Sheei 2 N V///////////// /////l Jan. 3o, 1940.

` H. T. wADDlLL.

l SICKLEHOLDNG AND SHARPENING MACHINE Filed sept. a, 1938 's sheets-sheet s Inventor vmswz Fifa/Jail Attorney/s Patented Jan. 30, 1940 y ,UNgl-TED STATES f s "y'i",.itflsalns*j*v I sicxLE noLDINGIANn SBARPENING. l*

nomma. New.` y Y 'Appnauonseptebu-a,193s, sena1`No.^2zs,434 comme'. loisir- 222) This invention relatesto newy and useful imwhereby sickles can provements in mechanisms be heldA and properly sharpenedwith the least amount of effort on the parto! the operator. j

the sickle can be once set and completelysharpened without removal therefrom.

Other objects and advantagesof the invenf'- tion will become apparent -to'the reader of the following specification.

In thedrawings: Y u 'A I Figure 1 represents a top plan View'. Figure 2 is a side elevational view.

Figure 3 is a section on line 3-f3 of Figure 4 is a section on line -lof Figure' 2.

Figure 5 is -a fragmentary detailed elevational view of one of the grinding units.

Figure 6 is a sectional view on line 8-8 of Figure 1.

Figure 'I is a side elevational view of one clamps.

Referring to the drawings wherein like numerof the als designate like parts, it can be seen that numeral 5 represents a narrow elongated table supported by the beam 6 and the end uprights, which consists of the upwardly converging legs 1-,1 connected at their lower portions by the crossmember 8 and these cross-members 8 are bridged by the planks 9 which form a platform for the electric motor I0.

On each end portion of the table 5 is a bearing ,II Afor receiving the'corresponding ends of the elongated shaft I2.

At desired spaced intervals along this. shaft I2 are the grinding units generally referred to by numeral I3, each consisting of the barrel Il having a downwardly extending flange I5 for embracing one edge portion of the table 5 and laterally disposed arms IB which are apertured to receive an elongated shaft Il. Each of the units I3 further includes the grinding element I8 which element is circular in cross section tapering from its intermediate portion toward each end. VEach of these grinding elements I8 is located on the shaft I1 between the corresponding pair of arms I6. A pulley I8 is secured to the shaft I'I and a belt 20 is trained over this pulley I8 and the pulley 2l on the shaft of the motor I0. Thus the grinding elements are driven by the motor III, belt 28 and shaft Il. v

L-shaped members 22 are provided for supporting the upper shaft 23. These L-shaped members 22 have their lower ends provided with collars 24 receiving the lower shaft I2 while their stood that numerous changes in the shape, size and materials may be resorted to without departupper endsare flikewise provided with collarslg through which the` upper shaft 23fis` disposed. The L-shaped members 22 are provided with heel, i Y portions-'26 for bodily rsupporting ythe upper; shaft Another important object of the invention is to fs provide a sickle-sharpening mechanism on which The upper shaft -23 Ycarries1the holding, generally referred'to by numeral 2l.. These hold- Y,

`ing'units eachl consists of a block.y 28 throughV which the 'shaft 23'extends, the block being swingy f able on the `shaft23 and a'bolt 29 extends throughgle the block -28`andthro`ugh the head portionjlof f j the/cam. whichjhas thehandle ,extension a3 I r..

The cani 3D has the -lip portion l2which'ridesf down against the blade, :or -Lb1ades333 .while :the

base portion 34 of the camcbears against;the, 15

member 35- of the sickle. The member 38- of ,the sickle assembly'engages into the groove llgpf,

the leg portions 38 of the block 28, and-whenthey:A

camV 30 is properly moved against the sickle it is held firmly to the block 28. With the sickle thus held, the entire holding means including the assemblies 21 and shaft 23, can be swung in the direction of the arrows in Figure 3 so thatA the blade 33 is brought against the revolving grinding units I3'. v

In the operation of the mechanism, it can be seen that the sickle blade is positioned with its straight edge disposed in the slot 31 of theleg. portions 3i!v of the block 28, with the blocks swung is remote from the grinding units I3. With the blade thus disposed, the cams 32 are moved by the levers 3| so that thecams act against the sickle blade to clamp the sickle blade in position as shown in Figure 6 to prevent displacement of the sickle blade.

The sicklek blade now carried by the block 28 is swung toward the grinding units I3 and then the entire assembly including the bracket 22, shaft 23, blocks 28 and the held blade can be swung to a position with the blade bearing against the grinding elements I8.

When the blade is to be removed,` the brackets 22 aredropped to rest upon the table 5 after which the blocks 28 are swung outwardly to the position shown in Figure 3 so that the cams 32 can be released from the sickle blade. Y

While the foregoing specification sets forth the invention in specific terms, it is to be undering from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as -new is: f 1

outwardly to the position shown inl Figure 3, that V80 comprising a second-mentioned 'shaft` and each havingfazsickle et structures attachedftorthel shaft;- and normally on the support, .said brackets having upstan'ding legs, a shaft extendingthrough the upstaiiii'ng legs', a block-,swi'ngablyl mounted onthe bladev edge-receiving slot therein, a cam on -eac'h ofthe blocks for'clamping'a-sickle blade and positioned-with one edge thereof disposed in the. slot of the block, said blockswand clampedsickle blade being adaptedto be swung in-unison toa.

position opposed to the grinding unit, or to a position remote fromthegrinding unit to permit displacement of the blade, said grinding unitsn comprising a support, `an elongated shaftmounted onthe support', apluralityfoffswingable grinding units onl the'shaftg. a plurality. of bracket structures attached to the` shaft andA` normally resting on the support, said brackets having upf standing legs, ashaft'a extending throughfthe.- upstanding. legs, a-block swingably mountedfon the second-mentioned shaft1 andi=each .bavingza sickle blade v edge-meceivingslot therein, a cani` on: each of the blocks for. clamping a-sicic'le-blade and positioned witi'rone'l edge. thereof; disposedf in the.

blade being-adaptedto be;swung.inif.unison to a. position opposed tothey grinding unit, ortoea po 1. A sickle holding and: sharpening: machine' support. an elongated shaft. mounted on the support; a-plurality ofJswingable grinding units on the'shaft, a'ffpluralityof brack comprising a support, an elongated shaft mounted onz-the support, a plurality of swings.- ble grinding units on the shaft, a plurality of 3; A; sickle holding andn sharpening machinebracket structures `attached to the shaft and normally resting on the support, said brackets havingv upstanding n legs, a shaft extending through.. the opstanding legs, a block swingably mounted on the second-mentioned vshaft and each having asickle blade edge-receiving slot therein, a cam on ,eachV of the blocks for clamping a sickle blade' and"positioned with one edge thereof disposed in the' slot of the block, said blocksand clampedV sickle blade beingeadapted to be swung in unisonvtoa posit-ion" opposed-to thegrinding unit',v ory toa position remote from the grinding unitfto permit displacementV of the blade, said grinding'units` being swingable in unison on the rstementioned shaft to engage the sickle blade whenthe sickle blad'ehas been'carriedvby the blocksandtpositioned in opposed relation to the saidfsharpening units, said-blocks being'of U- shape, saidblocks having one ofsaid slots in each leg portion thereof, each of the said U-shaped blocks; having thecam swingably mounted on the frame-portion thereof.

' HOUSION T. WADDILL. 

